Cascade water recycling intelligent system for shale gas exploitation

A cascade water recycling intelligent system for shale gas exploitation, comprising a cascade water recycling system (1), wherein a data output end of the cascade water recycling system (1) is connected with a data input end of an information system (2), a data output end of the information system (2) is connected with a data input end of a decision making system (3), and a data output end of the decision making system (3) is connected with a regulator (4);

• the cascade water recycling system (1) comprises at least one time of water quantity judgment, wherein a current exploiting intensity of shale gas is continued under a condition that the water quantity does not exceed a water safety threshold;
• and monitoring data is transferred to the information system (2) under a condition that the water quantity exceeds the water safety threshold;
• the information system (2) is further used for collecting a gas production rate and a water-deficient value in a current shale gas exploiting stage and transferring the collected data to the decision making system (3);
• an optimum gas production rate in a next stage, water demands of various water sources in the next stage and the water safety threshold in the next stage are obtained in the decision making system (3) based on the collected data collected by the information system (2), and the decision making system (3) is used for realizing prediction of the optimum gas production rate in the next stage;
• and
• the regulator (4) is used for regulating and controlling the exploiting intensity of shale gas in the current stage.